<template>
  <div class="container" :style="'background-image:url('+ Background +');'">
    <div class="login">
      <el-form ref="loginForm" :model="loginForm" :rules="loginRules" label-position="left" label-width="0px" class="login-form">
        <img src="../assets/platform.png" style="width:335px; height:78px;margin-bottom:12px;">
        <el-form-item prop="username">
          <el-input v-model="loginForm.username" type="text" auto-complete="off" placeholder="账号">
            <svg-icon slot="prefix" icon-class="user" class="el-input__icon input-icon" />
          </el-input>
        </el-form-item>
        <el-form-item prop="password">
          <el-input v-model="loginForm.password" type="password" auto-complete="off" placeholder="密码" @keyup.enter.native="handleLogin">
            <svg-icon slot="prefix" icon-class="password" class="el-input__icon input-icon" />
          </el-input>
        </el-form-item>
        <el-form-item prop="code">
          <el-input v-model="loginForm.code" auto-complete="off" placeholder="验证码" style="width: 63%" @keyup.enter.native="handleLogin">
            <svg-icon slot="prefix" icon-class="validCode" class="el-input__icon input-icon" />
          </el-input>
          <div class="login-code">
            <img :src="codeUrl" @click="getCode">
          </div>
        </el-form-item>
        <el-checkbox v-model="loginForm.rememberMe" style="margin:0 0 25px 0;">
          记住我
        </el-checkbox>
        <el-form-item style="width:100%;">
          <el-button :loading="loading" size="medium" type="primary" style="width:100%;" @click.native.prevent="handleLogin">
            <span v-if="!loading">登 录</span>
            <span v-else>登 录 中...</span>
          </el-button>
        </el-form-item>
      </el-form>
      <!--  底部  -->
      <div v-if="$store.state.settings.showFooter" id="el-login-footer">
        <span v-html="$store.state.settings.footerTxt" />
        <span> ⋅ </span>
        <a href="http://www.beian.miit.gov.cn" target="_blank">{{ $store.state.settings.caseNumber }}</a>
      </div>
    </div>
    <a
      class="index_download_item"
      href="./download/wangyunbao.apk"
      target="_blank"
      plat="android"
      role="button"
    >
      <div class="index_download_item_iconWrap">
        <span class="ww_officialImg ww_officialImg_DownloadAndroid index_download_item_iconWrap_normalIcon" />
        <img class="index_download_item_downloadIcon index_download_item_iconWrap_hoverIcon" src="../assets/images/qrcode.png">
      </div>
      <div class="index_download_item_title">Android版</div>
      <div class="index_download_item_desc">扫描二维码下载</div>
    </a>
  </div>
</template>

<script>
import Config from '@/settings'
import { getCodeImg } from '@/api/login'
import Cookies from 'js-cookie'
import md5 from 'md5'
import Background from '@/assets/background.png'
import img1 from '@/assets/images/android.png'
import img2 from '@/assets/images/qrcode.png'
export default {
  name: 'Login',
  data() {
    return {
      img1,
      img2,
      Background: Background,
      codeUrl: '',
      cookiePass: '',
      loginForm: {
        username: 'admin',
        password: '',
        rememberMe: false,
        code: '',
        uuid: ''
      },
      loginRules: {
        username: [{ required: true, trigger: 'blur', message: '用户名不能为空' }],
        password: [{ required: true, trigger: 'blur', message: '密码不能为空' }],
        code: [{ required: true, trigger: 'change', message: '验证码不能为空' }]
      },
      loading: false,
      redirect: undefined
    }
  },
  watch: {
    $route: {
      handler: function(route) {
        this.redirect = route.query && route.query.redirect
      },
      immediate: true
    }
  },
  created() {
    // 获取验证码
    this.getCode()
    // 获取用户名密码等Cookie
    this.getCookie()
    // token 过期提示
    this.point()
  },
  methods: {
    getCode() {
      getCodeImg().then(res => {
        this.codeUrl = 'data:image/gif;base64,' + res.img
        this.loginForm.uuid = res.uuid
      })
    },
    getCookie() {
      const username = Cookies.get('username')
      let password = Cookies.get('password')
      const rememberMe = Cookies.get('rememberMe')
      // 保存cookie里面的加密后的密码
      this.cookiePass = password === undefined ? '' : password
      password = password === undefined ? this.loginForm.password : password
      this.loginForm = {
        username: username === undefined ? this.loginForm.username : username,
        password: password,
        rememberMe: rememberMe === undefined ? false : Boolean(rememberMe),
        code: ''
      }
    },
    handleLogin() {
      this.$refs.loginForm.validate(valid => {
        const user = {
          username: this.loginForm.username,
          password: this.loginForm.password,
          rememberMe: this.loginForm.rememberMe,
          code: this.loginForm.code,
          uuid: this.loginForm.uuid
        }
        if (user.password !== this.cookiePass) {
          user.password = md5(user.password)
        }
        if (valid) {
          this.loading = true
          if (user.rememberMe) {
            Cookies.set('username', user.username, { expires: Config.passCookieExpires })
            Cookies.set('password', user.password, { expires: Config.passCookieExpires })
            Cookies.set('rememberMe', user.rememberMe, { expires: Config.passCookieExpires })
          } else {
            Cookies.remove('username')
            Cookies.remove('password')
            Cookies.remove('rememberMe')
          }
          this.$store.dispatch('Login', user).then(() => {
            this.loading = false
            this.$router.push({ path: this.redirect || '/' })
          }).catch(() => {
            this.loading = false
            this.getCode()
          })
        } else {
          console.log('error submit!!')
          return false
        }
      })
    },
    point() {
      const point = Cookies.get('point') !== undefined
      if (point) {
        this.$notify({
          title: '提示',
          message: '当前登录状态已过期，请重新登录！',
          type: 'warning',
          duration: 5000
        })
        Cookies.remove('point')
      }
    }
  }
}
</script>

<style rel="stylesheet/scss" lang="scss">
  .container {
    display: flex;
    justify-content: center;
    align-items: center;
    height: 100%;
    background-size: cover;
  }

  .title {
    margin: 0 auto 30px auto;
    text-align: center;
    color: #707070;
    background-image:url(/src/icons/platform.jpg);
    background-size: cover;
  }

  .login-form {
    border-radius: 6px;
    background: #ffffff;
    width: 385px;
    padding: 25px 25px 5px 25px;
    .el-input {
      height: 38px;
      input {
        height: 38px;
      }
    }
    .input-icon{
      height: 39px;width: 14px;margin-left: 2px;
    }
  }
  .login-tip {
    font-size: 13px;
    text-align: center;
    color: #bfbfbf;
  }
  .login-code {
    width: 33%;
    display: inline-block;
    height: 38px;
    float: right;
    img{
      cursor: pointer;
      vertical-align:middle
    }
  }

  .index_download_item {
    position: absolute;
    display: inline-block;
    bottom: 0;
    right: 20px;
    text-align: center;
    vertical-align: top;
    line-height: 1.5;

    img {
      border-style: none;
    }

    a, a:focus, a:hover {
      cursor: pointer;
      text-decoration: none;
      color: #4475A7;
    }

    .index_download_item_iconWrap {
      position: relative;
      display: inline-block;
      margin-bottom: 25px;
    }

    .index_download_item_iconWrap_normalIcon {
      position: relative;
      z-index: 1;
      vertical-align: top;
      -webkit-transition: all .3s;
      -o-transition: all .3s;
      transition: all .3s;
      transform:scale(0.9);
    }

    .index_download_item_iconWrap_normalIcon:hover {
      transform:scale(0);
    }

    .ww_officialImg_DownloadAndroid {
      background-image: url('../assets/images/android.png');
      background-position: 0 0;
      width: 120px;
      height: 120px;
    }

    .ww_officialImg {
      display: inline-block;
      overflow: hidden;
      font-size: 0;
      line-height: 0;
    }

    .index_download_item_downloadIcon {
      width: 120px;
      height: 120px;
      background-size: 100%;
    }

    .index_download_item_iconWrap_hoverIcon {
      position: absolute;
      left: 0;
      top: 0;
      z-index: 2;
      opacity: 0;
      -webkit-transform: scale(1.333,1.333);
      -ms-transform: scale(1.333,1.333);
      transform: scale(1.333,1.333);
    }

    .index_download_item_iconWrap_hoverIcon:hover {
      opacity: 1;
      transform:scale(1);
    }

    .index_download_item, .index_download_item_desc, .index_download_item_iconWrap_hoverIcon, .index_download_item_title {
      -webkit-transition: all .4s;
      -o-transition: all .4s;
      transition: all .4s;
    }

    .index_download_item_title, .index_download_item_desc {
      color: white;
    }

    .index_download_item_desc {
      opacity: 0;
    }

    .index_download_item_desc:hover {
      opacity: 1;
    }
  }
</style>
